Pixel Drive Circuit, Display Panel and Display Device

1. A pixel driving circuit, comprising: a driving transistor connected to a first node, a second node and a third node, and configured to output a driving current to the third node under control of the first node; a storage capacitor, comprising one terminal connected to the first node; a data writing circuit, connected to the second node, and configured to load a data voltage to the second node in response to a scan signal; a threshold compensation circuit, connected to the first node and the third node, and configured to conduct the first node and the third node in response to the scan signal; a first light emitting control circuit, connected to the second node, and configured to apply a first power supply voltage to the second node in response to a light emitting control signal; a second light emitting control circuit, connected to the third node and a fourth node, and configured to conduct the third node and the fourth node in response to the light emitting control signal; a first reset circuit, connected to the fourth node, and configured to apply a second power supply voltage to the fourth node in response to the scan signal; and a light emitting element, one terminal of the light emitting element is connected to the fourth node, and the other terminal is configured to load the second power supply voltage, wherein the pixel driving circuit comprises a first power supply lead configured to load the first power supply voltage and a second power supply lead configured to load the second power supply voltage, wherein the first power supply lead comprises a first part extending in a first direction and a second part extending in a second direction, and the first part and the second part are formed in different conductive lavers and are interconnected to form a grid shaped electrode; and wherein the second power supply lead comprises a first part extending in the first direction and a second part extending in the second direction, and the first part and the second part are formed in different conductive layers and are interconnected to form a grid shaped electrode.

2. The pixel driving circuit according to claim 1, wherein, the data writing circuit comprises a data writing transistor, the data writing transistor has a first terminal, a second terminal and a control terminal, the first terminal of the data writing transistor is configured to load the data voltage, the second terminal of the data writing transistor is connected to the second node, and the control terminal of the data writing transistor is configured to load the scan signal; the threshold compensation circuit comprises a threshold compensation transistor, the threshold compensation transistor has a first terminal, a second terminal and a control terminal, the first terminal of the threshold compensation transistor is connected to the first node, the second terminal of the threshold compensation transistor is connected to the third node, and the control terminal of the threshold compensation transistor is configured to load the scan signal; the first light emitting control circuit comprises a first light emitting control transistor, the first light emitting control transistor has a first terminal, a second terminal and a control terminal, and the first terminal of the first light emitting control transistor is configured to load the first power supply voltage, the second terminal of the first light emitting control transistor is connected to the second node, and the control terminal of the first light emitting control transistor is configured to load the light emitting control signal; the second light emitting control circuit comprises a second light emitting control transistor, the second light emitting control transistor has a first terminal, a second terminal and a control terminal, and the first terminal of the second light emitting control transistor is connected to the third node, the second terminal of the second light emitting control transistor is connected to the fourth node, and the control terminal of the second light emitting control transistor is configured to load the light emitting control signal; and the first reset circuit comprises a first reset transistor, the first reset transistor has a first terminal, a second terminal and a control terminal, the first terminal of the first reset transistor is configured to load the second power supply voltage, the second terminal of the first reset transistor is connected to the fourth node, and the control terminal of the first reset transistor is configured to load the scan signal.

3. The pixel driving circuit according to claim 1, wherein the pixel driving circuit further comprises a second reset circuit, connected to the first node and configured to apply an initialization voltage to the first node in response to a reset signal.

4. A display panel, comprising a pixel driving circuit, wherein the pixel driving circuit comprises: a driving transistor connected to a first node, a second node and a third node, and configured to output a driving current to the third node under control of the first node; a storage capacitor, comprising one terminal connected to the first node; a data writing circuit, connected to the second node, and configured to load a data voltage to the second node in response to a scan signal; a threshold compensation circuit, connected to the first node and the third node, and configured to conduct the first node and the third node in response to the scan signal; a first light emitting control circuit, connected to the second node, and configured to apply a first power supply voltage to the second node in response to a light emitting control signal; a second light emitting control circuit, connected to the third node and a fourth node, and configured to conduct the third node and the fourth node in response to the light emitting control signal; a first reset circuit, connected to the fourth node, and configured to apply a second power supply voltage to the fourth node in response to the scan signal; and a light emitting element, one terminal of the light emitting element is connected to the fourth node, and the other terminal is configured to load the second power supply voltage, wherein the pixel driving circuit comprises a first power supply lead configured to load the first power supply voltage and a second power supply lead configured to load the second power supply voltage, wherein the first power supply lead comprises a first part extending in a first direction and a second part extending in a second direction, and the first part and the second part are formed in different conductive layers and are interconnected to form a grid shaped electrode; and wherein the second power supply lead comprises a first part extending in the first direction and a second part extending in the second direction, and the first part and the second part are formed in different conductive lavers and are interconnected to form a grid shaped electrode.

5. The display panel according to claim 4, wherein the display panel comprises a display area and a peripheral area surrounding the display area; and the second power supply lead is formed in the display area, and the second power supply lead is electrically connected to the fourth node of the pixel driving circuit.

6. The display panel according to claim 5, wherein a number of the second power supply lead is plural, and wherein the first direction is a row direction and the second direction is a column direction.

7. The display panel according to claim 5, wherein the peripheral area comprises a second power supply bus, and the second power supply bus is connected to at least part of the second power lead.

8. The display panel according to claim 7, wherein the peripheral area has a binding area; the second power supply bus has a wiring segment and a connecting segment connected to each other; a number of the second power supply bus is two, the wiring segments of the two second power supply buses are all extend along the column direction and are respectively located on two sides of the display area; and the connecting segment of the second power supply bus extends to the bonding area.

9. The display panel according to claim 8, wherein the wiring segment of the second power supply bus is located at an end of the display panel close to the bonding area.

10. The display panel according to claim 5, wherein the pixel driving circuit comprises a second reset circuit, and the peripheral area of the display panel comprises a binding area; the display panel is further configured with: an initialization bus, configured to load the initialization voltage; a number of the initialization bus is two and are disposed in the peripheral area, and the initialization bus comprises a wiring segment and a connecting segment connected to each other; the wiring segments of the two initialization buses are all extend along the column direction and are respectively located on two sides of the display area; and the connecting segment of the initialization bus extends to the bonding area; an initialization lead, running through the display area along a row direction and connected to the wiring segment of the initialization bus; a first power supply bus, configured to load the first power supply voltage; a number of the first power supply buses is two and are disposed in the peripheral area, one terminal of the first power supply bus is extended to the bonding area; and the first power lead are arranged in the display area, and is connected to the first power supply bus; wherein the first power supply bus is partially overlapped with the initialization bus.

11. A display device, comprising a display panel, wherein the display panel comprises a pixel driving circuit which comprises: a driving transistor connected to a first node, a second node and a third node, and configured to output a driving current to the third node under control of the first node; a storage capacitor, comprising one terminal connected to the first node; a data writing circuit, connected to the second node, and configured to load a data voltage to the second node in response to a scan signal; a threshold compensation circuit, connected to the first node and the third node, and configured to conduct the first node and the third node in response to the scan signal; a first light emitting control circuit, connected to the second node, and configured to apply a first power supply voltage to the second node in response to a light emitting control signal; a second light emitting control circuit, connected to the third node and a fourth node, and configured to conduct the third node and the fourth node in response to the light emitting control signal; a first reset circuit, connected to the fourth node, and configured to apply a second power supply voltage to the fourth node in response to the scan signal; and a light emitting element, one terminal of the light emitting element is connected to the fourth node, and the other terminal is configured to load the second power supply voltage, wherein the pixel driving circuit comprises a first power supply lead configured to load the first power supply voltage and a second power supply lead configured to load the second power supply voltage, wherein the first power supply lead comprises a first part extending in a first direction and a second part extending in a second direction, and the first part and the second part are formed in different conductive layers and are interconnected to form a grid shaped electrode; and wherein the second power supply lead comprises a first part extending in the first direction and a second part extending in the second direction, and the first part and the second part are formed in different conductive layers and are interconnected to form a grid shaped electrode.

12. The display device according to claim 11, wherein, the data writing circuit comprises a data writing transistor, the data writing transistor has a first terminal, a second terminal and a control terminal, the first terminal of the data writing transistor is configured to load the data voltage, the second terminal of the data writing transistor is connected to the second node, and the control terminal of the data writing transistor is configured to load the scan signal; the threshold compensation circuit comprises a threshold compensation transistor, the threshold compensation transistor has a first terminal, a second terminal and a control terminal, the first terminal of the threshold compensation transistor is connected to the first node, the second terminal of the threshold compensation transistor is connected to the third node, and the control terminal of the threshold compensation transistor is configured to load the scan signal; the first light emitting control circuit comprises a first light emitting control transistor, the first light emitting control transistor has a first terminal, a second terminal and a control terminal, and the first terminal of the first light emitting control transistor is configured to load the first power supply voltage, the second terminal of the first light emitting control transistor is connected to the second node, and the control terminal of the first light emitting control transistor is configured to load the light emitting control signal; the second light emitting control circuit comprises a second light emitting control transistor, the second light emitting control transistor has a first terminal, a second terminal and a control terminal, and the first terminal of the second light emitting control transistor is connected to the third node, the second terminal of the second light emitting control transistor is connected to the fourth node, and the control terminal of the second light emitting control transistor is configured to load the light emitting control signal; and the first reset circuit comprises a first reset transistor, the first reset transistor has a first terminal, a second terminal and a control terminal, the first terminal of the first reset transistor is configured to load the second power supply voltage, the second terminal of the first reset transistor is connected to the fourth node, and the control terminal of the first reset transistor is configured to load the scan signal.

13. The display device according to claim 11, wherein the pixel driving circuit further comprises a second reset circuit, connected to the first node and configured to apply an initialization voltage to the first node in response to a reset signal.

14. The display device according to claim 11, wherein the display panel comprises a display area and a peripheral area surrounding the display area; and the second power supply lead is formed in the display area, and the second power supply lead is electrically connected to the fourth node of the pixel driving circuit.

15. The display device according to claim 14, wherein a number of the second power supply lead is plural, and wherein the first direction is a row direction and the second direction is a column direction.

16. The display device according to claim 14, wherein the peripheral area comprises a second power supply bus, and the second power supply bus is connected to at least part of the second power lead.

17. The display device according to claim 16, wherein the peripheral area has a binding area; the second power supply bus has a wiring segment and a connecting segment connected to each other; a number of the second power supply bus is two, the wiring segments of the two second power supply buses are all extend along the column direction and are respectively located on two sides of the display area; and the connecting segment of the second power supply bus extends to the bonding area.

18. The display device according to claim 17, wherein the wiring segment of the second power supply bus is located at an end of the display panel close to the bonding area.